Combined ventilating and draining union for electric-circuit-wire conduits



Amd/23, 1929. G. A AJOHNsoN 1,710,313 COMBINED VENTILATING AND DRAINING' UNION FOR ELETFIC CIRCUT WIRE CONDUITS Filed Jan. 9, 1926 INVENTOR. @S82/eff. @h/50144 B Y MWT@ is quite frequently the case in the use thereof in connection with various structures, the liquid accumulation will, upon exit from the openings or passages 12, be taken up by surrounding' concrete mass, which, as is well known, is always more or less moisture absorptive.

From the above description it will therefore be understood, that my novel construe1 tion of ventilatii'le' and draining union or coupling for metallic electric circuit wire conduit, will offer very desirable functions tending to prevent the accumulatioan of eon densed moisture within the interior of such conduit, and. consequently, the detrimental effects of such accumulations above referred to, will be substantially avoided both as to the conduit itself as well as to the insulated circuit wires housed and carried thereby.

Having thus described my invention, l claim f 1. The combination with metallic electric circuit Wire conduit made from a series of connected conduit members, of a union mem-l ber intermediate said conduit membersand coupling the same together with their adiomying ends spaced apart, said union member having in its walls and intermediate its ends radial passages disposed to communicate with the space intermediate adjoining conduit ends to provide communication between the interior and exterior of said conduit, serving both to ventilato said interior and drain accumulations of moisture therefrom.

2. The combination with metallic electric circuit wire conduit made from a series of connected pipe elements having.,r externally threaded ends, of a union member having internally threaded ends to engage the externally threaded ends of adjoining pipe elements to couple the latter together with their adjoining' ends spaced apart, said union member having in its walls and intermediate its ends radial passages disposed to eomn'nmicate with the space intermediate adjoiningr conduit ends to provide communication between the interior and exterior of said comluit, serving' both to ventilate said interior and drain accumulations of moisture ther from.

In testimony, that I claim the invention set forth above lf have hereunto set my hand this 29th day of December, 1925.

GUt 

